{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2170-0KA50","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2170-0KA50","canonicalUrl":"https://aoctrl.com/siemens/5SQ2170-0KA50","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2170-0KA50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ2170-0KA50, miniature circuit breaker, 1-pole, C-curve, 50 A, 3 kA per EN 60898, 240 V AC, IP20, 55 mm depth.","salesMarkdown":"## What the ratings mean for fit The Siemens SENTRON 5SQ2170-0KA50 is a 1-pole miniature circuit breaker (MCB) with a C-curve tripping characteristic, rated 50 A at 240 V AC. The C-curve means it trips between 5 and 10 times rated current — standard for motor and lighting circuits with moderate inrush. The 3 kA breaking capacity per EN 60898 tells you it can safely interrupt a fault current up to that level in a residential or light commercial distribution board; if your available fault current is higher, you need a breaker with a higher interrupting rating or upstream current-limiting protection. Rated for AC and DC voltage (AC/DC type) at 50 Hz. The 55 mm installation depth fits standard SENTRON distribution boards and enclosures. IP20 means it's protected against solid objects larger than 12 mm (fingers) but not against moisture — suitable for dry indoor panel environments only. ## Panel integration Occupies 1 width unit (18 mm) on a DIN rail. The 55 mm depth is shallower than many SENTRON siblings (e.g., 5SY series at 70 mm), which matters when the backplane clearance is tight. No neutral conductor switching — this is a single-pole line-side break only.","metaTitle":"Siemens 5SQ2170-0KA50 SENTRON MCB, 1P C-Curve 50A 3kA","metaDescription":"Siemens SENTRON 5SQ2170-0KA50 miniature circuit breaker, 1-pole, C-curve, 50 A rated, 3 kA breaking capacity per EN 60898. IP20, 55 mm depth. Current lifecycle stage. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Number of poles":"1","Type of voltage":"AC/DC","lifecycle_stage":"current","Installation depth":"55 mm","Product brand name":"SENTRON","Protection class IP":"IP20","Overvoltage category":"3","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1P","circuit-breaker / Design":"5SQ","Current / at AC / rated value":"50 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"3 kA","Supply voltage / at AC / rated value":"240 V","Supply voltage frequency / rated value":"50 Hz","Product function / neutral conductor switching":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$29.81","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=326352&mlfb=5SQ2170-0KA50","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2170-0KA50/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ2170-0KA50?","answer":"3 kA rated breaking capacity per EN 60898 at 240 V AC. This is the standard interrupting rating for a SENTRON T55 series MCB in residential and light commercial distribution."},{"question":"Where can I buy 5SQ2170-0KA50?","answer":"Sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2170-0KA50","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SQ2170-0KA50 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}